Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John David Marr, DO

Surgery Physician in Waco, TX · enumerated 2018.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1952898017

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Registry record

Entity type Individual (Type 1)

Name Dr. John David Marr

Credential DO

Sex Male

Practice address 100 Hillcrest Medical Blvd, Waco, TX, 76712

Phone (254) 202-2000

Enumeration date Apr 15, 2018

Last updated in NPPES Oct 26, 2023

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License BP10062651 (TX) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License U4563 (TX) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is John Marr?

John Marr is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Kathleen Dawson Certified Registered Nurse Anesthetist · Waco, TX NPI 1154324697 Tamsak Kanoklukul Certified Registered Nurse Anesthetist · Waco, TX NPI 1639177462 Janis Giles Family Nurse Practitioner · Waco, TX NPI 1871585737 Alan Sims Anesthesiologist Assistant · Waco, TX NPI 1750379640 Rafael Perez Pulmonary Disease Physician · Waco, TX NPI 1194706432 George Schwartze Neuromusculoskeletal Medicine & OMM Physician · Waco, TX NPI 1376526251 David Norman Certified Registered Nurse Anesthetist · Waco, TX NPI 1144206475 Steven Frawley Certified Registered Nurse Anesthetist · Waco, TX NPI 1831176825

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-26.